Combustion flask



March 31, 1925.

E. S. E?. BRANDT COMBUSTION FLASK 'Ifd biatch 26. 1921 'mr-q all Patented Mar. 31, 1925.

UNITED STATES PATENT OFFICE.

Application led latch 28, 1921. Serial No. 458,008.

To all whom it may concern:

Be "it known that I, EDMUND S. R. BRANDT, a citizen of the United States, residing at Newport, Rhode Island, have invented new and useful Improvements in Combustin Flasks, of which the following is a specification.

This invention relates to improvements in torpedoes, and more particularly to improvements in combustion flasks associated with the source of. power for driving the tor edo.

ne of the objects of the present invention is to provide an improved combustion l5 flask for torpedoes adapted to act as a super-heater for the various elements entering into the combustion medium before said elements are mixed and their temperature raised just prior to passing to the turbines.

A further object is to provide a superheater combustion flask of the above general character of simple and practical construction and one which may be easily substituted for those now in general use without material alteration in the associated parts.

A further object is to provide a combustion pot of the super-heater type adapted to utilize the heat energy which was formerly lost by radiation to preheat the water and air and to thoroughly mix these elements in the combustion flask as they are introduced.

Other objects\.will be in part obvious and a5 in part hereinafter pointed out in, connection with the accompanying sheet of drawings forming art of this disclisure and in the several res'of which corresponding parts are in icated by similar reference characters.

In this drawing, Figure 1, is a vertical longitudinal section of the combustion flask showing theconnection through which the fuel ingredients are passed.

Figure 2 is a top plan view of the combustion flask partly in section.

Referrin now to the drawing in detail, 5 denotes t e upper outer shell of the combustion flask and 6 the lower part connected in an desired manner as by means of the threa ed joint 7 and set screw devices 8. Within this upper half or part 5 of the flask is a dome or baille 10 slightly spaced from the inner wall of the art 5 and prou vided with a `plurality of olea 11, an air inlet pipe 12 is connected by means of nipple 13 with the upper part of the member 5 and is positioned tangentially with respect to this circumference as shown more clearly in Figure 2.

The air enters through a restricted por-` tion 14 and is caused to whirl around the inner surface of the member 5 and pass through the holes 11 into the interior of the flask. At the opposite side through the opening 15 is mounted thefpistol or firing meansv ada ted to ignite theyalcohol burner or other uel burner or, spray admitted lhrtlugh the opening 16 at the top of the The lowerfpart of the combustion flask 6 is also provided With a baille 17 having an outlet opening 18 for the products of combustion. This baille 17 is-slightly placed from the inner wall of the member 6 and is provided with an inlet 20 having a. restricted part 21 through which water enters and circulates about the` interior of the flask from whence it passes through openings 22 in the form of spray to the interior of the combustion pot adjacent the hottest part of the iame from the fuel burner at the top. The water in rising from the entrance port 20 to the central part ofthe flask is, of course, heated to a relatively high temperature and as it passes through the openings 22 it is quickly converted into steam and super-heated before it passes out through the opening 18.

It is, of course, to be understood that the inner liner or baille 17 is packed and secured in any desired manner as by means of washers 23 and 24 and the parts held in this position by means of nut 25 at the bottom.

As is well-known to those skilled in the 'art the relative timing of admission of air,

fuel and water with respect to the firing of the pistol is predetermined. The firing of the pistol igmtes the alcohol or the fuel as it is sprayed in through the opening 16 and the air entering through the pipe 12 supports combustion. The water entering through tlie pipe 21 prior to its admission to the interior of the pot through the spray hose 22 is preheated and by the time it reaches the sprayit is almost at the boiling point and is quickly converted into steam as it impinges on the burning fuel. The entire products of combustion then pass out through the pipe 18 to the turbines From the above it will be seen that the present invention provides a sim le and ractical su er-heater mechanism or comustion flas ada ted to utilize the heat and energy hereto ore lost in radiation in the types of unjacketed pots formerly used. The invention, in short, is believed to accomplish, among others, all of the objects and advanta es herein set forth.

. Without rther analysis, the foregoing will so fully reveal the glst of this invention that others can by appl ing current knowledge readily adapt 1t or various applications without omitting certain features that, from the standpoint of the prior art,fairly constitute essential characteristics of the Ageneric or specific aspects of this invention,

meaning and range o equivalency of the following claim.

What I claim srv In an apparatus of the character described, in combination, a double walled combustion llask having a central combustion chamber, a fuel inlet at the top thereof and means for admitting air tangentially near the top of the flask between the walls and then admitting it to the combustion chamber near the middle thereof whereby it circulates between the walls and is reheated before its admission to said cham r, a water inlet near the bottom of the flask and between its Walls, the inner wall of said flask having a plurality of perforations near the middle below the air inlet whereby the water entering at the` bottom between the walls is preheated before its admission to said combustion chamber.

Signed at Newport, Rhode Island, this 15th day of February, 1921.

` E. S. R. BRANDT. 

